Satellite Interpretation Message
Issued by NWS Tiyan, Guam

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ATPQ40 PGUM 271502
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
102 AM CHST SUN MAY 28 2017

WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.

TRADE-WIND CONVERGENCE IS CREATING SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS WITHIN 180 MILES OF A LINE FROM 4N156E TO 12N172E.
THIS INCLUDES POHNPEI...LIES JUST NORTH OF KOSRAE AND INCLUDES A
NUMBER OF THE NORTHERN ATOLLS IN THE MARSHALL ISLANDS. THESE
SHOWERS ARE BEING ENHANCED BY AN UPPER-LEVEL TROUGH WHICH CURVES
FROM NEAR KOROR PALAU TO NEAR GUAM TO AN UPPER-LEVEL LOW NORTHEAST
OF WAKE ISLAND. THIS COULD BE THE BEGINNING OF THE LONG AWAITED
DROUGHT RELIEF FROM THE TROPICAL UPPER TROPOSPHERIC TROUGH FOR THE
NORTHERN MARSHALL ISLANDS. FURTHER CLOUDINESS AND SCATTERED
SHOWERS EXTEND SOUTHWARD PAST MAJURO AND KWAJALEIN WITHIN 120
MILES OF A LINE FROM 10N170E TO 2N172E.

AN UPPER-LEVEL LOW IS CENTERED NEAR 23N173E NORTHEAST OF WAKE
ISLAND. A SURFACE TROUGH EXTENDS FROM 17N173E TO 25N173E. THE
COMBINATION OF THESE TWO FEATURES IS PRODUCING SCATTERED SHOWERS
AND ISOLATED THUNDERSTORMS BETWEEN 17N AND 25N FROM 173E TO 179E.

A SURFACE TROUGH IS GENERATING SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS FROM YAP TO CHUUK BETWEEN THE EQUATOR AND 11N FROM
136E TO 141E AND BETWEEN THE EQUATOR AND 8N FROM 141E TO 153E.

THE MEI-YU FRONT...OR PLUM RAINS...EXTENDS FROM SOUTHERN LUZON TO
EAST OF JAPAN. THE STATIONARY FRONT IS PRODUCING AN AREA OF
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS TO THE NORTHWEST OF A
LINE FROM 18N130E TO 25N137E WHICH IS FAR TO NORTHWEST OF THE
MARIANAS.

$$



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